Patents Assigned to FutureWei Technologies
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Publication number: 20080095536Abstract: An integrated DWDM transmitter apparatus includes a silica-on-silicon substrate overlying a first support component. The silica-on-silicon substrate includes a silica layer overlying a silicon layer. A coefficient of thermal expansion of the first support component is substantially matched to a coefficient of thermal expansion of the silicon layer. An optical multiplexer is located within the silica layer and includes a plurality of input waveguides and at least an output waveguide. Additionally, the apparatus includes a second support component attached to a side surface of the first support component. One or more semiconductor laser array chips overlie the second support component. A coefficient of thermal expansion of the one or more semiconductor chips is substantially matched to a coefficient of thermal expansion of the second support component.Type: ApplicationFiled: October 3, 2007Publication date: April 24, 2008Applicant: FutureWei Technologies, Inc.Inventors: Xiao Andy Shen, Yu Sheng Bai
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Publication number: 20080091809Abstract: A distributed path computation element based system in a multi-layer network. The system comprises at least one higher-layer path computation element, and at least one lower-layer path computation element, adapted to provide dynamic multi-layer path computations; at least one higher-layer traffic engineering database, and at least one lower-layer traffic engineering database, adapted to provide multi-layer traffic engineering label switched paths, while maintaining layer-specific traffic engineered database in a distributed fashion; and at least one path computation element agent, adapted to provide static optical layer path provisioning, and reconfiguration of optical layer label switched paths in cooperation with the at least one lower-layer path computation element.Type: ApplicationFiled: October 16, 2006Publication date: April 17, 2008Applicant: FutureWei Technologies, Inc.Inventor: Young Lee
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Publication number: 20080089346Abstract: A system for a global concurrent path computation in a communication network is disclosed. The system includes a path computation element communication protocol, wherein the protocol includes an indicator field indicating the global concurrent path computation, a global objective function field providing an overarching objective function, a global constraint field specifying at least one global constraint, a global concurrent vector field specifying at least one path computation request, and another indicator field indicating an outcome of a path computation request.Type: ApplicationFiled: October 16, 2006Publication date: April 17, 2008Applicant: FutureWei Technologies, Inc.Inventor: Young Lee
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Publication number: 20080089688Abstract: An integrated DWDM receiver apparatus includes a support component and a silica-on-silicon substrate overlying the support component. The substrate includes a silica layer overlying a silicon layer and includes a first surface region and a second surface region. An optical demultiplexer is disposed within the silica layer under the first surface region and overlying the silicon layer. The optical demultiplexer includes a plurality of output waveguides and at least an input waveguide. The receiver apparatus includes one or more reflecting structures located in the silica layer under the second surface region. Each of the reflecting structures is optically coupled to a corresponding output waveguide. The receiver apparatus also includes one or more semiconductor photodetector array chips overlying the second surface region of the silica-on-silicon substrate. Each of the one or more photodetector array chips including one or more photodetectors which is optically coupled to a corresponding reflecting structure.Type: ApplicationFiled: July 27, 2007Publication date: April 17, 2008Applicant: FutureWei Technologies, Inc.Inventor: YU SHENG BAI
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Publication number: 20080089697Abstract: An integrated DWDM transmitter apparatus includes a silica-on-silicon substrate which includes a silica layer and a silicon layer. A plurality of input waveguides and a plurality of gratings are provided within the silica layer. Each of the plurality of gratings is coupled to a corresponding one of the input waveguides. An arrayed waveguide grating within the silica layer is coupled to the plurality of input waveguides, and at least an output waveguide within the silica layer are coupled to the arrayed waveguide grating. The transmitter also includes a plurality of lasers disposed in a recessed region of the silica-on-silicon substrate, and each of the lasers is optically coupled to a corresponding one of the plurality of input waveguides. The integrated transmitter also includes plurality of photodiodes, each of the plurality of photodiodes overlying a corresponding one of the plurality of grating.Type: ApplicationFiled: September 20, 2007Publication date: April 17, 2008Applicant: FutureWei Technologies, Inc.Inventors: XIAO ANDY SHEN, Yu Sheng Bai
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Publication number: 20080084842Abstract: Method and system for foreign agent relocation in wireless network. According to an embodiment, the present invention provides a system for providing wireless access. The system includes a service network that include a database for storing information associated with providing network connection. The system also includes a first access network that is configured to provide a first wireless access in a first location. The system further includes a mobile station that is associated with the first access network, the mobile station being configured to send location update messages in an idle mode. The method also includes a second access network that is configured to provide access for the mobile station. The second access network is configured to provide a second wireless access in a second location. The system also includes a third access network that is configured to receive a first location update message from the mobile station in the idle mode.Type: ApplicationFiled: August 28, 2007Publication date: April 10, 2008Applicant: FutureWei Technologies, Inc.Inventors: Zhixian XIANG, Phillip BARBER
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Publication number: 20080084950Abstract: A system for realizing emergency rate reduction (SOS). A receiver initiates a short rate-reduction request, and communicates that request to a transmitter. The transmitter initiates an operational switch to an adjusted transmission reference (i.e., a new bit/gain table), by sending a signal to synchronize the operational switch for both the transmitter and the receiver. The adjusted transmission reference may be calculated using a formula, from a current bit/gain table, or may be a predefined bit/gain table. The parameters of the formula may be predefined, calculated during initialization, or determined in real time during SOS.Type: ApplicationFiled: September 28, 2007Publication date: April 10, 2008Applicant: Futurewei Technologies, Inc.Inventors: Guozhu Long, Jun Zhou, Jianhua Liu
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Patent number: 7355985Abstract: A method and system for processing a squelch table for optical network applications. The method includes receiving a first cross-connection entry associated with a first cross-connection and a first channel, and generating a first squelch entry associated with the first channel in a first squelch table associated with a first node. Additionally, the method includes sending a first request message associated with the first cross-connection to a second node. Moreover, the method includes if a first response message associated with the first cross-connection is received at the first node in response to the first request message within a predetermined period of time, processing information associated with the first response message and modifying the first squelch entry in response to at least information associated with the first response message.Type: GrantFiled: March 22, 2004Date of Patent: April 8, 2008Assignee: FutureWei Technologies, Inc.Inventor: Harbhajan Virdee
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Publication number: 20080080864Abstract: An integrated DWDM transmitter apparatus includes a support component and a silica-on-silicon substrate overlying the support component. The support component includes a temperature adjustment component. The silica-on-silicon substrate overlies the support component and includes a silica layer and a silicon layer. The silica-on-silicon substrate includes a corresponding a substrate surface which includes a first surface region and a second surface region. In an embodiment, the two surface regions are not coplanar. The transmitter apparatus includes an optical multiplexer within the silica layer, the optical multiplexer including a plurality of input waveguides and at least an output waveguide. The transmitter apparatus also includes one or more semiconductor laser array chips overlying the first surface region of the silica-on-silicon substrate. Each of the laser array chips including two or more lasers, which are optically coupled to corresponding ones of the plurality of input waveguides.Type: ApplicationFiled: April 4, 2007Publication date: April 3, 2008Applicant: FutureWei Technologies, Inc.Inventor: YU SHENG BAI
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Publication number: 20080080866Abstract: An integrated DWDM transmitter apparatus includes a support component and a silica-on-silicon substrate overlying the support component. The support component includes a temperature adjustment component. The silica-on-silicon substrate overlies the support component and includes a silica layer and a silicon layer. The silica-on-silicon substrate includes a corresponding a substrate surface which includes a first surface region and a second surface region. In an embodiment, the two surface regions are not coplanar. The transmitter apparatus includes an optical multiplexer within the silica layer, the optical multiplexer including a plurality of input waveguides and at least an output waveguide. The transmitter apparatus also includes one or more semiconductor laser array chips overlying the first surface region of the silica-on-silicon substrate. Each of the laser array chips including two or more lasers, which are optically coupled to corresponding ones of the plurality of input waveguides.Type: ApplicationFiled: August 24, 2007Publication date: April 3, 2008Applicant: FutureWei Technologies, Inc.Inventor: YU SHENG BAI
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Publication number: 20080076429Abstract: A versatile system for controlling and managing resources for Soft Handoff Group operations is disclosed. The system determines which of a plurality of sectors in an access network is a serving sector for an access terminal. An active set of the plurality of sectors is assigned to the access terminal, comprising the serving sector. A soft handoff set for the access terminal is identified from the active set. A soft handoff group for the access terminal is identified from the soft handoff set. The access terminal's transmissions within the access network are managed according to the identified soft handoff group.Type: ApplicationFiled: September 7, 2007Publication date: March 27, 2008Applicant: Futurewei Technologies, Inc.Inventors: David Comstock, Jianmin Lu, Anthony Soong, Zhigang Rong, Jung Lee
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Publication number: 20080075003Abstract: A method for controlling communications traffic on an inter-access-network link includes receiving a request for transmission of a traffic flow and determining a priority queue associated with the traffic flow. If the priority queue corresponds to the one of a first plurality of priority levels, the method further includes determining whether one or more predetermined criteria for the traffic flow are satisfied. If yes, the method additionally admitting the traffic flow, storing information associated with the traffic flow in the queue, and transmitting information associated with the traffic flow from the queue based on at least a strict priority process. If the queue corresponds to the one of a second plurality of priority levels, the method further admitting the traffic flow, storing information associated with the traffic flow in the queue, and transmitting information associated with the traffic flow from the queue based on at least an arbitrated priority process.Type: ApplicationFiled: September 19, 2007Publication date: March 27, 2008Applicant: FutureWei Technologies, Inc.Inventors: Kuo-Chun Lee, Mazin Al-Shalash, Shuqing Xing, Jun Hu, Qing Lin, Ted Olawuyi, Hsien Woo, Thawatt Gopal
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Publication number: 20080076424Abstract: Method and system for error handling in wireless communication networks. According to an embodiment, the present invention provides a method of providing wireless services. The method includes providing a wireless communication network. The wireless communication network includes a wireless device, a first access network and a second access network. The first access network includes a first data associated with the wireless device. The method also includes sending a first request for service by the wireless device to the second access network. The method additionally includes determining by the second access network whether the second access network has a second data for serving the wireless device. Also, the method includes sending a second request by the second access network to the first access network if the second access network does not have the second data. The second request is associated with serving the wireless device.Type: ApplicationFiled: May 23, 2007Publication date: March 27, 2008Applicant: FutureWei Technologies, Inc.Inventors: Phillip Barber, Zhixian Xiang
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Publication number: 20080070594Abstract: A system for assigning a subscriber device into a paging group in a wireless communication network. The system comprises a network entity that creates paging group information for the subscriber device using at least one Quality of Service (QoS) requirement, and sends the paging group information to the subscriber device.Type: ApplicationFiled: September 13, 2007Publication date: March 20, 2008Applicant: Futurewei Technologies, Inc.Inventor: Phillip Barber
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Publication number: 20080070542Abstract: A telecommunication network component, comprising: a memory configured to store instructions, and a processor configured to execute the stored instructions, the instructions comprising: determining a plurality of power allocation adjustments for signals transmitted via an antenna array that promotes decision-feedback detection without using channel state information, and outputting the power allocation adjustments to the array. Also disclosed is a power allocation method comprising: determining a power allocation scheme that promotes decision-feedback detection in a multiple-input and multiple-output system without using channel state information, and implementing the power allocation scheme on an antenna array by modifying an adjustment for each of a plurality of antennas in the array.Type: ApplicationFiled: September 15, 2006Publication date: March 20, 2008Applicant: Futurewei Technologies, Inc.Inventors: Ye Li, Anthony C. K. Soong, Jianmin Lu
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Publication number: 20080068983Abstract: A communications network comprising components configured to implement a method comprising analyzing a path between a first end point and a second end point, and identifying a partial fault along the path is disclosed. Also disclosed is a method for communicating information within a network, the method comprising: defining a path traversing a plurality of nodes, receiving a fault report from an intermediate node, determining whether the fault report affects the path, and responsive to the determination that the fault report affects the path, transmitting the fault report to an upstream or downstream node in the path.Type: ApplicationFiled: October 30, 2006Publication date: March 20, 2008Applicant: Futurewei Technologies, Inc.Inventors: Linda Dunbar, Lucy Yong, Steve Yao
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Publication number: 20080070564Abstract: Disclosed herein is a system and method for downlink beamforming that takes into account imperfect channel state information (CSI) at the transmitter when determining the steering vector used in the beamforming process. The steering vector is calculated to increase the ratio of the average power of a desired signal component to the sum of the interference power of other wireless terminals, referred to as the signal-to-leakage ratio. By accounting for imperfect CSI when calculating the steering vector, the bit-error rate for a given signal-to-noise ratio is decreased. Also disclosed is a power allocation method that improves performance of the system by increasing the signal-to-interference-plus-noise ratio for all of the wireless terminals currently communicating with the base station. The power allocation similarly decreases the bit-error rate for a given signal-to-noise ratio, especially at high signal-to-noise ratios.Type: ApplicationFiled: September 15, 2006Publication date: March 20, 2008Applicant: Futurewei Technologies, Inc.Inventors: Ye Li, Anthony C.K. Soong, Yinggang Du, Jianmin Lu
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Publication number: 20080072047Abstract: An solution for a mobile station to perform intra-domain inter-access controller authentication using an 802.11r protocol in CAPWAP architecture is presented. The access controller is the authenticator that is configured to store a top-level and second-level shared authentication keys in a key hierarchy defined in 802.11r. The mobile station first-time association and re-association after inter-access-point handoff can be performed through authentication request/response message exchange between the mobile station and the access controller. The new access controller after handoff gets top-level key from the old access controller called an anchor authenticator. The mobile station and the new access controller generate a new second-level key and session key to complete the authentication.Type: ApplicationFiled: May 16, 2007Publication date: March 20, 2008Applicant: FutureWei Technologies, Inc.Inventors: Behcet Sarikaya, Robert Jaksa
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Publication number: 20080069133Abstract: A telecommunications network comprising components configured to implement a method comprising: receiving a reservation from a customer, reserving a network resource specified in the reservation, initiating the establishment of a reserved connection through a network, the reserved connection parameters based on the reservation, subsequent to the establishment of the reserved connection, detecting a data stream transmitted from the customer, and allowing the data stream to be transported over the network using the reserved connection. Also disclosed is a method for reserving bandwidth on a network, the method comprising: submitting a reservation request specifying a bandwidth requirement and a start time, receiving a confirmation that the reservation has been accepted, and transmitting a data stream to a network at the start time, wherein the data stream is transported over the network using no more than the bandwidth specified in the reservation request.Type: ApplicationFiled: September 15, 2006Publication date: March 20, 2008Applicant: Futurewei Technologies, Inc.Inventors: Lucy Yong, Linda Dunbar, Young Lee
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Publication number: 20080062996Abstract: A telecommunications network component comprising a processor configured to implement a method comprising: receiving a data stream, establishing a virtual connection with a destination through one of a plurality of networks, and configuring the data packets for transportation to the destination over the virtual connection, wherein the data packets follow the virtual connection through the carrier network so long as a rerouting condition is not detected. Also disclosed is a method of routing order sensitive data, comprising: providing a connection to a plurality of carrier networks, establishing a plurality of pseudo-wires through the carrier networks, transmitting an order specific data over one of the pseudo-wires, and multi-homing to detect a rerouting condition on one of the pseudo-wires.Type: ApplicationFiled: September 13, 2006Publication date: March 13, 2008Applicant: Futurewei Technologies, Inc.Inventors: John Kaippallimalil, Young Lee, Linda Dunbar